# GPT-5.6 Terra vs GPT-6.1 Sol

As of Oct 14, 2026, GPT-5.6 Terra leads GPT-6.1 Sol in 1 of 10 shared categories: Factuality.

GPT-5.6 Terra: $4.5 per 1M blended tokens.

GPT-6.1 Sol: $4.000000000000001 per 1M blended tokens.

GPT-5.6 Terra: closed weights.

GPT-6.1 Sol: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, GPT-6.1 Sol leads GPT-5.6 Terra in General LLM at #18 against #35.
- Which to pick, Reasoning: As of Oct 14, 2026, GPT-6.1 Sol leads GPT-5.6 Terra in Reasoning at #15 against #35.
- Which to pick, Science: As of Oct 14, 2026, GPT-6.1 Sol leads GPT-5.6 Terra in Science at #4 against #15.
- Which to pick, Coding: As of Oct 14, 2026, GPT-6.1 Sol leads GPT-5.6 Terra in Coding at #2 against #13.
- Which to pick, Coding › Agentic: As of Oct 14, 2026, GPT-6.1 Sol leads GPT-5.6 Terra in Coding › Agentic at #2 against #13.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, GPT-6.1 Sol leads GPT-5.6 Terra in Coding › Web dev at #4 against #42.
- Which to pick, Long context: As of Oct 14, 2026, GPT-6.1 Sol leads GPT-5.6 Terra in Long context at #17 against #46.
- Which to pick, Vision: As of Oct 14, 2026, GPT-6.1 Sol leads GPT-5.6 Terra in Vision at #1 against #11.
- Which to pick, Factuality: As of Oct 14, 2026, GPT-5.6 Terra leads GPT-6.1 Sol in Factuality at #24 against #29.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, GPT-6.1 Sol leads GPT-5.6 Terra in Abstraction (ARC) at #1 against #4.

As of Oct 14, 2026, GPT-5.6 Terra is ranked #4 in Abstraction (ARC) (since Oct 14, 2026; sources ARC-AGI; methodology v1.0).

As of Oct 14, 2026, GPT-6.1 Sol is tied for state of the art in Vision (since Sep 30, 2026; sources GDP.pdf; methodology v1.0).